Apparatus for inserting and removing shackle pins



March 18, 1941. E. M. PFAUSER APPARATUS FOR INSERTING AND `REMOVING SHAGKLE PINS l ,Erf/Q1 j Filed Dec. 27, 1937 5 Sheets-Sheet 1 wwwwww 0 INVEVTOR..

` arch 18,' 1941. E, M, PFAUSR 2,235,643

APPARATUS FOR INlSE-RTING AND REMOVING SHACKLE PINS 4 Filed Dec, 27, 1937 s sheets-sheet 2 INVENTR, f

ATTORNEY@ Mrch 18, 1941- l E. M PFAusER 2,235,643

APPARATUS FOR INSERTING AD REMOVING SHACKLE PINS INVENTOR.

ATToRNEY bili Patented Mar. 18, 1941 UNITED s'rfras APPARATUS Fon INSERTING AND aEMovmG snAcxLn PINS Edward M. Pfauser, Elm Grove, Wis.,` assigner to Blackhawk Mfg. Co., Milwaukee, Wis., a corporation of Wisconsin Application December z'z, 1937, serial No. maar s claims.

` The present invention relates generally to im# provements in the art of assembling and dismantling relatively inaccessible assemblages, and

relates more specifically to an improved method of inserting and removing elements such as shackle pins or studs and to improvements in the construction of apparatus for effecting such operatons.

Generally stated, an object of my present invention is to `provide improved instrumentalities for effecting insertion and removal of pins or theA connect the spring hanger brackets and the spring ends, with the adjacent ends of the spring shackle links. These shackle pivot pins are ordi narily pressed horizontally into snug confining bores in the spring hanger brackets and in the ends of the spring, whichbores are located in front of and in direct alinement with the front axle beam; and when the pins are in place, there is limitedclearance between the rear threaded ends of the pins and the front irregular face of the obstrpcting axle.- The same condition prevails at both the front and rear of some automobiles, and aside from the obstruction afforded by the axle beam, the shackle pins are relatively inaccessible due to the presence of other obstructions; and since the pins or studs are very snugly fitted withinl the Vspring hanger bracket and spring bores, and must be inserted or removed without damaging the bores or the studs, it becomesy quite a diflicult problem to effect pin replacements in an effective manner and `with minimum loss of4 time. The method now commonly employed to remove these studs, is to use a drift pin and Sledge, and to cut the studs off by increments as they are driven back against the axle. This method is not only slow and laborious, but also results in damaged bores; and in many cases it is necessary under prevailing methods, to burn or chisel the studs out of their connning bores.'

It is therefore a more specific object-'of this invention to provide an improved method of facilitating insertion vand removal of shackle studs or pins insuch automobile assemblages and to further provide simple, readily manip-` ulable apparatus for effecting-such insertion or removal of the studs without damaging the spring hanger bracket bores or studs.

Another specific obect of my invention is the provision of an improved jack attachment for effecting axial removal and insertion of elon gated substantially cylindrical elements, which arenormally confined in relatively restricted and obstructed localities.

Still another specific object of the invention is to provide a new and useful automobile repair 10 tool which will enable convenient replacement of shackle studs or the like with minimum loss of ime.

An additional specific object of the present invention is the provision of an improved pusher 15 attachment especially applicable to hydraulic jacks, and adapted to push pins' into and from their confining bores in either direction. These and other objects and advantages will be apparent from the following `detailed descrip 20V tion.

A clear conception of the several features conl stitutlng my present invention, and of the mode of constructing and of utilizing my improved apipliance for the insertion and rempval of 'shackle .25'

pins, may be had by referring to the drawings accompanying and forming a part of this specification in which like reference characters designateV the same or similar parts in the various views. 30

Fig. 1 is a longitudinal central section through one of the improved tools, showing the same applied to a fragment of a hydraulic jack and active in removing a shackle stud from its confining bore in a s'pring hanger bracket, and also show- 35 ing the shackle pin assemblage in section;

Fig. 2 is another longitudinal central section through the tool, showing the same applied to the jack and in the act of pressing a shackle stud into the bore of -a spring hanger bracket; 4D

Fig. 3 is a transverse section through both of the members of the improved tool assemblage, taken along the line 3-3 of Fig. 1';

Fig. 4 is anothertransverse section through one of the tool members removed from the jack, 4.15.y

and taken along the line 4--4 of Fig. 1; Fig. 5 is a perspective view showing the first step involved in effecting removal of'a shackle pin or stud with the aid of the improved tool assemblage after the same has been applied to a 50 hydraulic jack; l 4

Fig. 6 is a similar view showing the second step of the shackle stud removal;

Fig. 7 is another similar view showing the third step 'involved in the pin removal; y, IB"

Fig. 8 is st ill another similar view showing the fourth step of the stud or pin removal;

Fig. 9 is anothersimilar view showing the fth and nal step of the removal method; l Fig. 10 is a perspective view showing the -rst or initial step involved in effecting insertion of a shackle pin or stud within the bore of a spring hanger bracket; Fig. 11 is a similar View showing the second 10 step of the inserting method;

Fig. 12 is another similar view showing the third step of the insertion;

Fig. 13 is still another similar the nal pin insertion step; and l5 Fig. 14 is a perspective view of a typical h ydraulic jack assemblage with which my improved tool is adapted to cooperate. I

While the invention has been shown and described herein as being especially applicable for the insertion and removal view showing type of jack may be utilized. The term or not, and the term bore" is intended to include any hole of similar cross-section. Referring specically to Figs. 1 to 4 inclusive of the drawings, the improved apparatus shown.

60 alinement purposes.

portion of the outer abutment 'I'he medial member I6 has a U-shaped transverse crossreception'of a bushing 28 having a recess 29 adapted to receive and to properly position the 50 outer ends of the sections 24, 25, and this bush- 'I'he members I6, 20 are preferably of sturdy construction, and are one end and an I 8 at its opposite end The particular type of jack mechanism with which my improved attachment cooperates, is of no importance. except that the jack must be sufprovement may be conveniently applied, and the outer element or cylinder 21 of this jack communicates with a manually moving a shackle pin assemblage or stud 36 from 25 a snug confining bore 31 formed in the spring hanger bracket 38, and this bracket is so formed and supported, that the bore 37 is in direct horijacent the irregular front surface of the axle 30 as to prevent marring of the end threads 40 of 35 tion to each other and to the studs. The several steps of the method of removing a shackle stud 36 from within the bore 3l of a spring hanger bracket 33, are clearly depictedv in bracket 38 upon the axle 39 are clearly illustrated. In Fig. 5 the improved device is being initially applied to the automobile assemblage.

The collar or sleeve section 24 is rst placed upon y f the threaded end d@ of the shackle stud 35 ad- 55 20 in alinement with the stud 33. 1n Fig. 6 the 60 This relative movement of the members i6 20 flange Il is moved downwardly to drive the block section into the bore. After the' stud 35 has been thus substantially removed from its normal confining bore, the jack structure and the members I6, 20 may be withdrawn, and the shackle stud may thereafter be readily completely removed.` From this description as illustrated in Figs. 5 to 9 inclusive, it will be apparent that the shackle pin 3B may be quickly and conveniently removed from within its confining bore without danger of marring the' bore 31 of the spring hanger bracket 38. The sectional inserts enable such efficient removal of the stud in spiteof the fact that the end thereof is located closelyuadjacent to the axle 39, and the removal is effected by increments substantially equal to the length of the pusher sections 24. 25.

A shackle pin or stud 36 may be just as readily :inserted without danger of marring the stud shell or its threaded ends 4U. The several steps constituting the' method of effecting such insertion of a stud 36 are clearly depicted in Figs. 10 tol13 inclusive. In Fig. 10 the stud is being preliminarily conditioned for insertion by application of the cap to the thread end 4l which is to be located nearest the axle 39. In Fig. 1l the pusher sections 24,'l 25 are being disposed within the inner member 20 and against the abutment surface 23 thereof, and the members l, 2li are about to be applied to the stud 36 'one end of which has beenslightly inserted within thebore tl oi the bracket 33. In Fig. 12 the jack elements 2l, 3l have been positioned in alinement with the bore, and the abutment flange IB has beenbrought into engagement with the end of the bracket 33 adjoining the bore. The pump 34 of the' jack may be subsequently manipulated, thereby causing the member 20 to move upwardly asshovvn in Fig. 13, while the ange I8 oi the outer member it reacts against the bracket tt. The sleeve section 24 engaging the outer end ot the shell oi' l the stud 36. and the block sections 25 counting with the sleeve section 2t, will then drive the stud tt into the bore while the c a'p titl prevents marring of the thread 4U adjacent to the axle 39. when the shackle pinor stud has been driven home, the jack may be operated to withdraw the `collar section 'M and the abutment flange I8, away/from the ends of the stud and the device may thereafter be freely withdrawn. It will thus be apparent that the shackle pin may be quickly and effectively inserted without danger oi marring the threaded ends 40 thereof, and the insertion is again `effected by relatively moving the abutment portions of the members IG, 20 toward each other by increments.

From the foregoing detailed description it will be apparent that my invention provides a simple and effective method for effecting insertion or removal of the shackle pins or studs, Without danger of damaging the bores 3l oi brackets @d or marring the threads at the opposite ends ol the studs. The close proximity oi the axle .M to the spring hanger bracket 30 is not detrimental to such insertion or removal, and the improved.

apparatus can be quickly and conveniently manipulated to effect the desired operations, The members l5, 2U may obviously be quickly and conveniently applied to the jack elements 21, 3l, and by providing the hollow and solid sections 24, 25 thesesame sections may be utilized for eifecting either insertion or removal of the shackle pins. The formation of the outer end inner members l5, 2li is also important since the provision of the spaced abutted surfaces 22, 23 on the inner member 2n and the cooperating abutment flange onthe outer member I6, permits interchangeable use of the device for either insertion or removal of the pins. The improved assemblage may obviously be manufactured and sold at moderate cost and has proven highly satisfactory in actual commercial use.

It should be understood that it is not desired to'limit this invention to the exact details of construction or to the precise steps of the method herein shown and described, for various modifications Within the scope of the `claims may occur topersons skilled in the art.

I claim:

l. An attachment for adapting a jack having external and` internal elements relatively movable along an axis for the purpose of inserting and removing shackle pins with respect to their supports, said attachment comprising, an outer elongated member adapted to span the shackle pin and its support and having one end formed for attachment to the` end'of the external jack element and its opposite end provided with a fiange extending across the jack and pin axis, an inner member located between the ends of said outer member and having one'end formed for attachment to the corresponding end of the internal jack element and its opposite end provided with an end abutment spaced laterally from said axis suiliciently to clear the shackle pin when said abutment engages the support While the medial portion of said member is provided with another abutment crossing said axis, and a pushing collar adapted to be interchangeably interposed between said flange and the shackle pin when Said end abutment is active in removing the support from the pin and between said medial abutment and the shackle pin when said flange engages the pin support and the pin is being inserted.

2. `An attachment for adapting a jack having external and internal elements relatively movable along an axis for the purpose of inserting and re;- movlng shackle pins with respect to their supports, said attachment comprising, an outer elongated member" adapted to span the shackle pin and its support and having one end formed for attachment to the end of the external jack element and its opposite end provided with a flange extending across the jack and pin axis, an inner member located betweenl the ends of said outer member and having one end formed for attachment to the corresponding end of the internal jack element and its opposite end provided with an end abutment spaced laterally from said axis sumciently to clear the shackle pin when said abutment engages the support While the medial portion of said member is provided with another abutment crossing said axis, a pushing collar adapted to be interchangeably interposed between said flange and the shackle pin when said end abutment is active in removingl the support from the pin and between said medial abutment,"` and the shackle pin when said flange engagiestlfe pin support and the pin'is being inserted, y'and a spacer block formed for disposition between said Cil medial abutment and said collar pin is being inserted.

3. An attachment for adapting a jack having when the shackle an end abutment spaced laterally from said axis sucently to clear the shackle pin when said abutment engages the support while the medial portion of said member is provided with another said axis, a pushing collar adapted to be inter hangeably interposed between abutment is active in removingl the support from the pin and between is being inserted.

5. An attachment for adapting a jack having external and internal elements relatively movable along an axis for the purpose of inserting and removing shackle pins with ports. said attachment compris between said flange and the shackle pin when 2 spacer block interlocking 2 elements relatively movable 3 cross-section located between 4 Ithe ends of said outer member and having one end formed for screw-thread attachment to the EDWARD M. PFAUSER. 

